You have new items in your feed. Click to view.
Question and answer
explain effects of soil physical properties on crop production
Crops have been grown in the subhumid and semiarid Argentinean Pampas for over 50 years using tillage methods (intensive plowing) introduced from more humid regions. [ As a result, soil degradation due to erosion by wind and water has been moderate to severe. Experiments to control erosion through use of conservation systems were initiated at six semiarid and subhumid sites in the Argentinean
Pampas between 1976 and 1990 and conducted for 5 to 11 years. In this paper, we summarize the effect of conventional and conservation tillage treatments on some soil properties and crop yields. Most soil physical, chemical, and biological properties were improved by conservation systems, but the rate of change differed due to climatic and soil differences among sites, with the difference due to tillage generally being greater at the more humid sites with loamy soils than at the drier sites with sandier soils. Crops with a large N requirement yielded less with conservation than with conventional tillage systems. Use of conservation tillage can improve or stabilize soil conditions in the region, but crop nutrient requirements must be met to achieve optimum crop yields when conservation tillage is used. Research regarding the plant nutrient requirements under conservation tillage is being conducted. Also, conservation tillage is gaining acceptance in the Argentinean Pampas region. ]
Expert answered|ANGEEELICA|Points 2208|
Question
Asked 3/18/2011 5:14:41 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
26,594,592 questions answered
Popular Conversations
y varies directly with x and has a constant rate of change of ...
Weegy: we can model this in terms of a linear equation. y=mx+b Since the question states that y varies directly with ...
12/8/2016 11:22:54 AM| 2 Answers
Solve (x + 1 -3). User: What is the GCF of the trinomial? 3x^2 - ...
Weegy: The GCF of the trinomial 3x^2 - 15x - 42 is 3. User: , write the equations of the line passing through the ...
12/8/2016 11:16:05 AM| 2 Answers
6% of what number is 270?
Weegy: 270 * 6 = 1620 A number divided by six is 270. The number is 1620. User: Find 5% of $32.68. Weegy: 5% of ...
12/8/2016 5:50:27 PM| 2 Answers
Weegy Stuff
S
P
Points 178 [Total 450] Ratings 1 Comments 168 Invitations 0 Offline
S
P
Points 79 [Total 511] Ratings 0 Comments 79 Invitations 0 Offline
S
P
P
Points 48 [Total 727] Ratings 0 Comments 48 Invitations 0 Offline
S
Points 40 [Total 40] Ratings 0 Comments 40 Invitations 0 Offline
S
Points 16 [Total 292] Ratings 0 Comments 16 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 8 [Total 8] Ratings 0 Comments 8 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 0 [Total 0] Ratings 0 Comments 0 Invitations 0 Offline
S
Points 0 [Total 0] Ratings 0 Comments 0 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.